Printing-telegraph



(No Model.) 2 Sh'eet-Sheet 1. D.B.SGOTT.

PRINTING TELEGRAPH. No. 350,469. Patented Oct. 5, 1886.

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Patented Oct. 5, 1886.

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D. BRYCE SCOTT, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE WESTERN UNION TELEGRAPH COMPANY OF NEW YORK.

PRINTING-TELEGRAPH.

5PECIFICATION forming part of Letters Patent No. 350,469, dated October 5, 1886.

Application filed May 24, 1886. Serial No. 203,079. (No model.) u

ment in Printing-Telegraph Apparatus, of

which the following is a specification.

In printing-telegraphs the escapement-palr movement, they being impelled by considerable force, and thus the blows of the escapement mechanism upon rigid metallic buffers heretofore employed occasion injurious wear and disagreeable noise. Other parts of print- 1 5 ing-telegraph apparatus are also subject to shocks and noise due to the limiting-buffers as usually constructed.

The object of my invention is to provide the vibrating mechanism of printing-telegraphs with limiting-buffers, which shall render the apparatus nearly noiseless and less subject to wear from the shock experienced when arrested at the extreme position of vibration.

I will now explain my invention by reference to the accompanying drawings.

Figure 1 represents a plan view of a printing-telegraph instrument provided with my improved forms of buffers. Fig. 2 is a side View of the printingtelegraph apparatus, showing the arrangement of limiting-buffers of the press mechanism. Fig. 3 is aside view of the typewheel escapement apparatus provided with my improved form of buffers.

Figs. 1 and 3 illustrate the escapement mechanism, in which M is the escapement electromagnet, P the escapement-pallets mounted upon an axial armature-lever pivoted at p, and

E is the escapement-wheel mounted upon the type-wheel shaft. The buffers h limit the to- 0 and-fro movement of the pallets P by contact of the surfaces m at the extremities of the pallets, and f is a cup-shaped holder having a rim, within which is fixed the buffer h. I The holdercup f is secured tightly upon the end of a 5 screw, b,which passes through a bracket-arm, d, mounted upon a bracket, 6, while the screw 12 is provided with a screw-head, a, and also with a tightening-nut, 0. By this arrangement, upon loosening the tightened nut c and turning the screw-head a, the position of the buffer it may be adjusted to any required position with reference to the pallet-surface m, thus increasing or decreasing atpleasure the stroke of the escapement-pallets. In forming such buffers I may make the pieces h of leath- 3 5 er, vulcanized fiber, or of other non-resonant tenacious material. Preferably, however, for escapement-buffers I employ a good quality 7 of sole-leather.

The method of attaching buffer h within the cup-shaped holder which I prefer is as follows: The holder is first made in the form of a blank having a plain cylindrical rim, 9, and within such cylindrical opening I place a cylindrical piece of sole-leather,whose outer end projects a little distance beyond the rim. The rim of the holder is then hammered down to the form of a frustum of a cone, thus pressing the soleleather compactly within the rim. The outer end of the sole-leather about the rim 9 is then turned down by lathe or other suitable means, leaving a flat end projecting slightly beyond the rim.

Limiting-buffers such as those described may be employed in connection with the press mechanism of the printer, though in connection with the presslever and the press-pad shifter ordinary vulcanized-fiber bufi'ers in the form of sleeves mounted upon axial metallic pins may be employed. 8o

In'Figs. 1 and 2 I have shown the press-1e. ver L having a free end, q, whose to-and-fro movement is limited by vulcanized fiber sleeves n 0, respectivelymounted upon axial pins projecting from adjustable levers H F, the latter being pi-voted at 'w t.

As will be seen in the drawings, N is the press-magnet, O the armature controlling the press-lever, and y a retracting-spring therefor.

A limiting buft'er-pin, f, made of vulcanized 9c fiber is also employed as a back-stop for the armature-lever.

T represents the type-wheels, r the laterallyvibrating press-pad, and s a pin mounted upon 'the press-lever, upon which the press-pad is 5 laterally moved by means of the leverA through the agency of the armature D, electro-magnet B, and retracting spring 2. The forward movement of the armature D is limited by the vulcanizedfiber sleeve or pin 1), while the back ward movement of the armature-lever A is limited by similar buffer, 10.

hat I claim, and desire to secure by Letters Patent, is-

1. In a printing-telegraph, the combination of :1 type-wheel, an escapement-wheel, a clockmotor or other suitable apparatus for driving the type-Wheel shaft, an eseapement-auehor, an electi'o-lnagnet' Controlling said anchor, and limiting-buffers formed of sole-leather or other equivalent tenacious end non-resonant material, as and for the purpose described.

2. In a printing-telegraph, the eolnbination 0f eseapement apparatus consisting of escapement pellets and limiting buffers formed of I 5 sole-leather and a eup'shaiped holder, as and for the purpose described.

3. In a printingtelegmph, an escapementwheel, E, eseapement-pallets P, having eonteet-pieces m, and limitingbufi'ers formed 0f 20 sole-leather h, holderf, set'serew b, and bmekets a, substantially as described.

D. BRYCE SCOTT. Witnesses:

\VM. ARNoUX, JOHN C. SANDERS. 

